Revetment for the protection of slopes, embankments, walls of canals, &amp;c.



R. R. L. DE MURALT. RBVETMENT FOR THB PROTECTION 0F SLOPES, EMBANKMENTS,WALLS 0F GANALS, dw.

APPLICATION FILED SEPT. 21, 1909.

Patented Mar. 29, 1910.

ANDREW a GRAHAM Co, VHOWMI'NOGMPMRS, WASmNaroNvn UNITED STATES PATENTOFFICE.

ROBERT RUDOLF LODEWYK DE MURALT, OF ZIERIKZEE, NETHERLANDS.

REVETMENT FOR THE PROTECTION OF SLOPES, EMBANKMENTS, WALLS OF CANALS,&c.

Specification of Letters Patent.

Patented Mar. 29, 1910.

Application 'filed September 21, 1909. Serial No. 518,844.

To all whom it may concern:

Be it known that I, Ronnn'r RUDOLF LoDnwYK DE MURALT, engineer, asubject of the Queen of the Netherlands, residing at Oude Haven No. D.480, in the city of Zierikzee, in the Kingdom of the Netherlands, haveinvented certain new and useful Improvements in Revetments for theIrotection of Slopes, Embankments, lValls of Canals, and Trenches inGeneral.

The drawback presented by most of the systems of revetment used up tothe present for the protection of slopes, dikes, embankments and similarworks, for the walls of canals and trenches in general, is theirabsolute and irrational rigidity, because, generally the groundsprotected are submitted to certain unavoidable movements from whichthere either results that the ground is washed away under the revetment,or that the revet ment is completely destroyed through splitting,cracking and disintegration.

The present invention has for its object:

l. A movable revetment for the protection of slopes, dikes, embankmentsand similar works, for the walls of canals and trenches or any inclinedearthen surfaces in general, characterized by the fact that thedifferent elements constituting this revetment remain independent fromeach other, which allows: (a.) Certain relative movements of the different elements constituting the revetment. (b.) Easy and cheap'repairsof the movements having taken place in the protected earth-work.

2. AV device showing, by way of example, one of the numerous forms ofthe claimed improvement.

Figures 1 and 2 show in plan view and section respectively a lowerelement shown by way of example, with a lower ledge or flange. Figs. 3and 4 show in plan view and section respectively one form of the upperelements, with an upper ledge or flange. Fig. 5 is an elevation of aFiring member, for securing the device in position upon the earthwork orthe like. Fig. 6 is an elevation of a part of a complete revetment,according to the invention. Fig. 7 is a section on the line A-A of Fig.6.

In Figs. l and 2: l, l are lower elements. 2, 2 are ledges or flanges ofthe said lower elements.

In Figs. 3 and 4: 3, 3 are upper elements. 4, 4 are upper ledges ofthese elements. 5, 5

are openings made in the center of the upper elements.

In Fig. 5: 6 is the body of a fixing member or element. 7 is the head ofthis member.

In Figs. 6 and 7, the elements or members bear the same referencenumbers as in the other figures.

In Fig. 7 8, S represent inclined earthwork surfaces. The ground havingbeen well leveled, a certain number of lower elements are judiciouslyplaced on this surface. These elements are spaced in such a way that thebody of each upper element will lill exactly the spaces left freebetween the lower elements. After the upper elements have thus beenplaced, so that their ledge or flange covers the ledge or flange of theinferior elements, the fixing members, represented in Fig. 5 are forcedinto the openings 5 of the upper elements. Previously to this forcing ahole is made in the ground 8 by means of any suitable tool in order toallow the body 6 of the fixing element to penetrate sufficiently deepinto the earthwork.

The lower elements, the upper elements and the fixing' members can haveany suitable form, any suitable size and be made of any suitablematerial.

Having now fully described my invention what I claim is:

1. A protective device for earth work and the like, comprising aplurality of elements, each element being free from positive connectionwith any other element.

El. A protective device for earth work and the like, comprising aplurality of elements, each element being free from positive connectionwith any other element, and means for securing certain of said elementsto the earth work.

8. In a protective device for earth work and the like, in combination, aplurality of elements provided with a lower flange, and a plurality ofelements provided with an upper flange, said elements being free frompositive connection with one another and being so positioned upon theearth work that the upper flanges of said second mentioned elementsengage the lower flanges of said first mentioned elements.

4. In a protective device for earth work and the like, in combination, aplurality of elements provided with a lower flange, a

plurality of elements provided with an upper flange, said elements beingfree from positive connection with one another, and being so positionedupon the earth work that the upper flanges vof said second mentionedelements engage the lower flanges of said first mentioned elements, andmeans for securing said second mentioned elements to the earth work.

5. In a protective device for earth work and .the like, in combination,a plurality of elements provided with a lower flange, a plurality ofelements provided with an upper flange, said elements being free frompositive connection with one another, and

being so positioned upon the earth Work that the upper flanges of saidsecond mentioned elements engage the lower flanges of said firstmentioned elements, said second mentioned elements being provided withopenings therethrough, and fixing members extending through saidopenings and into the earth .work for retaining the elements inposition.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

ROBERT RUDOLF LODEWYK DE MURALT. Witnesses:

E. HEYL, GREGORY PHELAN.

